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Incorrect wiring? Not Cooling

Sagey
Community Member

‎07-27-2025 10:50 AM

Could someone please tell me what I'm doing wrong? Have an AC with heat pump and air is coming out warm on Cool mode. I'm guessing I've got it wired wrong. I'm attaching photos of the original wiring and the way I currently have it wired. Could someone please tell me what I need to change? Thank you so much Original Wiring  Current wiring 

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GabrielaG
Community Specialist
Community Specialist

‎07-31-2025 01:18 PM

Hi @Sagey,

 

Thanks for reaching out to the community. I understand your frustration with your AC blowing warm air, and it's completely understandable to wonder if it's a wiring issue. I'm here to help you get this resolved.

I appreciate you sharing the photos. As I see in the pictures you provided, you have six wires connected to your Nest Learning Thermostat 4th Gen. Your wiring looks good, but we need to change a couple of wires to make the AC run as expected. Please check below:

  • Y1 - yellow

  • W1 - white

  • C - Blue

  • G - green

  • OB - orange

  • R - red

Let me know if you have any other questions.

 

Regards,

Gabriela

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